When Hurricane Sandy struck the east coast of the United States five years ago, its high winds and a powerful storm surge were blamed for 60 deaths in New York and New Jersey and caused $70 billion in property damage. Since Sandy, coastal communities in the U.S. and around the world have faced the question of whether they should rebuild after superstorms or retreat for safer ground? Special correspondent Stephanie Sy reports on that debate in southern New Jersey, as part of our series on climate change, "Peril or Promise."